Mark Ruffalo shares what he thinks about everyone saying Noah Centineo looks like a younger him, and he reveals how much trouble he got into for Avengers spoilers during his last appearance.

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The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show including: comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.

Mark Ruffalo Reacts to Being Compared to Noah Centineo
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